Other Events and Attributes:

• Appointments / Titles: Lord of the Craebh, Cianachta, and Fir-Li
• Appointments / Titles: Lord of the Creeve, Coleraine and Keenaght
• House: Clan of The Ó Catháin - a sept of the Cenél nEógain branch of the Northern Uí Néill
• FSID: 9CXH-FV6
• Residence: Limavidy, Londonderry, Northern Ireland
• Military: 1138; Fell through treachery and guile, by the Ui-Eoghain of the Valley

Notes:

Raghnaill (Ranall) was a son of Iomhar O'Cahan M1138.6 Raghnall, son of Imhar Ua Cathain, lord of the Craebh, Cianachta, and Fir- Li, fell through treachery and guile, by the Ui-Eoghain of the Valley.' Annals of the Four Masters, 1138

The valley people are evidently Clan Binny, and the O'Cahan killed ushers the O'Cahan clan into a stormy future that occupies a large place in Ulster history for the next five and a half centuries. This is the first mention of the O'Cahans in the Annals, and it is perhaps appropriate that their coming was preceded by a great storm in the previous year. By 1138 they are obviously masters not only of the Creeve, but also of Cianachta and Fir-Li.

Iomhar O'Cahan Added By Merryl Hunkin; 19 August 2018
This person was created through the import of Sheppard_Duncan_Bickham_Stroud.ged on 01 February 2011.
Raghnaill Mac Iomhair O'CATHAIN Sex: M Birth: ABT 1100 Death: 1138 in Ireland

Sources
↑ Library Ireland : Princes of Limavady, County Londonderry
↑ https://celt.ucc.ie/published/T100005B.html
↑ https://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=thamm&id=I155999

https://www.wikitree.com/wiki/O'Cathain-6

Family/Spouse: Unknown. [Group Sheet] [Family Chart]

1. O'Cathain, Eachmarcach was born in 1125 in Northern Ireland; died in 1195 in Dublin, Ireland.

Other Events and Attributes:

• House: Clan of The Ó Catháin - a sept of the Cenél nEógain branch of the Northern Uí Néill
• FSID: 9CXH-FVH
• Residence: Limavidy, Londonderry, Northern Ireland

Notes:

IO-Clery gives the ancestry of Sir Donnell O'Cahan from Owen and Niall of the Nine Hostages as follows-:
... Domnall ballach
m Ruaidri m Maghnusa
m Donnchada an einigh
m Seaain
m Aiberne
m Diarmada
m Con mhuighe
m Diarmada
m Con muighe na nGall
m Magnusa chatha duin
m Ruaidri m Domhnaill
m Eachmharcaigh
m Raghnaill
m Iomhair
m Gilla Crist
m Concionaedh
m Diermada
m Cathusaigh
m Cathain (a quo h Chathain)
m Drugain
m Concobhair
m Fergail
m Maile duin
m Maile fithrigh
m Aedha uairiodhnaigh
m Downaill ilcealccaigh
m Muircertaigh
m Muirethaigh
m Eogain
m Neill noigiallaigh.
(Analecta Hlbernica i 8).

Other Events and Attributes:

• House: Clan of The Ó Catháin - a sept of the Cenél nEógain branch of the Northern Uí Néill
• FSID: LTZH-KYK
• Residence: Limavidy, Londonderry, Northern Ireland

Notes:

Biography
Giollachriosd (Gilchrist) was a son of Conn Ciconntach O'Cahan, the first to assume the family name of O'Cahan as a surname. [1]

The Ó Catháin, meaning "descendants of Cahan", were a sept of the Cenél nEógain branch of the Northern Uí Néill [2]

The first known O'Ceanns held a family seat in Derry, Ulster, Ireland from at least the 10th. century. The great variety in spellings of this family name include - Cain, Caine, Kane, Cahan, O'Cahan, Kean, Keane, O'Keane, Ceane, Cean, Kahan, O'Kean, O'Kane, O'Kaine, Kaine, Keann, Cainn, Cainne, Kainne, Kainn, Cahann, O'Cain and many others. [3]

Sources
↑ Giollachriosd was the son of Conn Cionntach O'Cahan: son of Dermod; first assumed this sirname; had a brother named Annselan, who was the ancestor of O'Bocainain ("bocain:" Irish, fairies; "an," one who), anglicised Buchanan. This Annselan was the first of the family who settled in Scotland. Library Ireland : Princes of Limavady, County Londonderry
↑ Ó Catháin
↑ Wikipedia : O'Ceann
See also:

O'Cahans, Princes of Ulster : Rise to Power
Irish Pedigrees: Or, The Origin and Stem of the Irish Nation, Volume 1 by John O'Hart, https://books.google.com/books?id=2icbAAAAYAAJ&pg=PA623&lpg=PA623&dq=~genealogy+Giollachriosd+O%27Cahan+Limavady,+Ulster,+Ireland&source=bl&ots=XWGrQBW0Vu&sig=ACfU3U0ANbVjn_z65V3OjlgAdWwXpBHYCg&hl=en&sa=X&ved=2ahUKEwiCruif9ZHiAhVPKawKHZ0TA24Q6AEwBnoECBIQAQ#v=onepage&q=~genealogy%20Giollachriosd%20O'Cahan%20Limavady%2C%20Ulster%2C%20Ireland&f=false

https://www.wikitree.com/wiki/O'Cahan-5

Other Events and Attributes:

• FSID: LDRX-MR9

Notes:

Conn Ciconntach O'Cahan, the first to assume the family name of O'Cahan as a surname. [1] [2]

The Ó Catháin, meaning "descendants of Cahan", were a sept of the Cenél nEógain branch of the Northern Uí Néill [3]

The first known O'Ceanns held a family seat in Derry, Ulster, Ireland from at least the 10th. century. The great variety in spellings of this family name include - Cain, Caine, Kane, Cahan, O'Cahan, Kean, Keane, O'Keane, Ceane, Cean, Kahan, O'Kean, O'Kane, O'Kaine, Kaine, Keann, Cainn, Cainne, Kainne, Kainn, Cahann, O'Cain and many others. [4]

Conn Cionntach* O'Cahan: son of Dermod ; first assumed this surname ; had a brother named Annselan, who was the ancestor of O'Bocainain (" hocain :" Irish, fairies; "an," one who), anglicised Buchanan. This Annselan was the first of the family who settled in Scotland.[5] Irish Pedigrees: Or, The Origin and Stem of the Irish Nation, Volume 1 By John O'Hart

Sources
↑ Irish Pedigrees: Or, The Origin and Stem of the Irish Nation, Volume 1 By John O'Hart
↑ Giollachriosd was the son of Conn Cionntach O'Cahan: son of Dermod; first assumed this sirname; had a brother named Annselan, who was the ancestor of O'Bocainain ("bocain:" Irish, fairies; "an," one who), anglicised Buchanan. This Annselan was the first of the family who settled in Scotland. Library Ireland : Princes of Limavady, County Londonderry
↑ Ó Catháin
↑ Wikipedia : O'Ceann
↑ Irish Pedigrees: Or, The Origin and Stem of the Irish Nation, Volume 1 By John O'Hart[1]
O'Cahans, Princes of Ulster : Rise to Power
Cionntach: From this name ("cionntach:" Irish, guilty) some derive Mac Cionntaigh, anglicised Maginty and Ginty.

https://www.wikitree.com/wiki/O'Cahan-12